Cooling fan assembly for table playing machine

ABSTRACT

A cooling fan assembly includes a housing, a motor mounted in the housing, a fan rotatably mounted in the housing and rotated by the motor, and a cover mounted on the housing to cover the motor and the fan so that the housing and the cover form a space to cover the motor and the fan completely. Thus, the first air guide port of the housing and the second air guide port of the cover co-operate to increase the total air output of the cooling fan assembly, thereby greatly enhancing the air flow rate from the table playing machine, and thereby enhancing the heat dissipation effect of the cooling fan assembly.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a cooling fan assembly, and moreparticularly to a cooling fan assembly for a table playing machine.

2. Description of the Related Art

A conventional cooling fan assembly for a table playing machinecomprises a fan and a motor for rotating the fan. In operation, when thefan is rotated by the motor, the ambient air is introduced by the fan toform an air flow which is blown into the table playing machine to push aball placed above the table playing machine so that the ball issuspended in the air and moved in an irregular manner, thereby enhancingthe amusement effect of the table playing machine. However, the motorproduces larger vibration and noise during operation, thereby easilycausing an uncomfortable sensation to the players. In addition, the fanhas a smaller air flow rate, thereby decreasing the amusement effect andthe heat dissipation effect of the table playing machine.

SUMMARY OF THE INVENTION

The primary objective of the present invention is to provide a coolingfan assembly having a larger air flow rate and producing smallervibration and noise.

Another objective of the present invention is to provide a cooling fanassembly, wherein the first air guide port of the housing and the secondair guide port of the cover co-operate to increase the total air outputof the cooling fan assembly, thereby greatly enhancing the air flow ratefrom the table playing machine.

A further objective of the present invention is to provide a cooling fanassembly, wherein the first air guide port of the housing and the secondair guide port of the cover increase the air flow rate of the coolingfan assembly, thereby enhancing the heat dissipation effect of thecooling fan assembly.

A further objective of the present invention is to provide a cooling fanassembly, wherein the motor is covered by the housing and the covercompletely, thereby reducing vibration and noise produced by the motorso that the cooling fan assembly is operated at a state having smallervibration and noise.

Further benefits and advantages of the present invention will becomeapparent after a careful reading of the detailed description withappropriate reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a cooling fan assembly in accordancewith the preferred embodiment of the present invention;

FIG. 2 is an exploded perspective view of the cooling fan assembly asshown in FIG. 1;

FIG. 3 is a perspective view of a housing of the cooling fan assembly asshown in FIG. 1;

FIG. 4 is a plan cross-sectional view of the cooling fan assembly asshown in FIG. 1;

FIG. 5 is a top plan cross-sectional assembly view of the cooling fanassembly taken along line 5-5 as shown in FIG. 4; and

FIG. 6 is a plan cross-sectional view of the cooling fan assembly for atable playing machine as shown in FIG. 1.

DETAILED DESCRIPTION OF THE INVENTION

Referring to the drawings and initially to FIGS. 1-5, a cooling fanassembly in accordance with the preferred embodiment of the presentinvention comprises a housing 3, a motor 1 mounted in the housing 3, afan 2 rotatably mounted in the housing 3 and rotated by the motor 1, anda cover 4 mounted on the housing 3 to cover the motor 1 and the fan 2 sothat the housing 3 and the cover 4 form a space to cover the motor 1 andthe fan 2 completely.

The housing 3 includes a housing body 31 for mounting the motor 1 and anair guide base 35 mounted on a side of the housing body 31. The housingbody 31 of the housing 3 has a peripheral wall formed with a receivingchamber 32 and two spaced passages 33 located beside the receivingchamber 32. The housing body 31 of the housing 3 has an inner wallformed with a plurality of screw bores 34 (see FIG. 3). The air guidebase 35 of the housing 3 has a shape of the number six (6) and has aperipheral wall formed with a first air guide port 36 to guide an airflow through the air guide base 35 of the housing 3. The first air guideport 36 of the air guide base 35 is provided with a plurality of firstair gates 361 to gather an air flow through the first air guide port 36of the air guide base 35. The air guide base 35 of the housing 3 has anend portion formed with a plurality of through holes 37.

The cover 4 includes a recessed cover body 41 mounted on the air guidebase 35 of the housing 3, and a netted plate 42 mounted on an end faceof the cover body 41 to introduce an ambient air into the cover body 41.The cover body 41 of the cover 4 has a shape of the number six (6) andhas a peripheral wall formed with a second air guide port 43 juxtaposedto the first air guide port 36 of the air guide base 35 to guide an airflow through the cover body 41 of the cover 4. The second air guide port43 of the cover body 41 is provided with a plurality of second air gates431 juxtaposed to the first air gates 361 of the first air guide port 36to gather the air flow through the second air guide port 43 of the coverbody 41. The cover body 41 of the cover 4 has an end portion formed witha plurality of screw bores 44, and the housing 3 further includes aplurality of locking bolts 371 each extended through a respective one ofthe through holes 37 of the air guide base 35 and screwed into arespective one of the screw bores 44 of the cover body 41 to secure thecover 4 to the air guide base 35 of the housing 3.

The motor 1 includes a motorized body 11 mounted in the housing body 31of the housing 3, a rotation shaft 14 rotatably mounted on the motorizedbody 11, two electric wires 15 each mounted on the motorized body 11 andextended through a respective one of the passages 33 of the housing body31 to connect a power supply (not shown), and a capacitor 16 mounted onthe two electric wires 15 and secured in the receiving chamber 32 of thehousing body 31 by a locking screw 161. The motorized body 11 of themotor 1 has a periphery formed with a plurality of fixing ears 12 eachformed with a through hole 13, and the motor 1 further includes aplurality of locking bolts 17 each extended through the through hole 13of a respective one of the fixing ears 12 of the motorized body 11 andscrewed into a respective one of the screw bores 34 of the housing body31 to secure the motorized body 11 of the motor 1 to the housing body 31of the housing 3.

The fan 2 includes a circular recessed rotation body 21 secured on therotation shaft 14 of the motor 1 to rotate therewith, and a plurality ofblades 22 mounted on a peripheral wall of the rotation body 21 anddirected toward the first air guide port 36 of the air guide base 35 andthe second air guide port 43 of the cover body 41. The rotation body 21of the fan 2 has an end face formed with a plurality of ribs 23 arrangedin a radiating manner and a fixing hole 24 located at a center of theribs 23. The rotation shaft 14 of the motor 1 is extended through andfixed in the fixing hole 24 of the rotation body 21 by a washer 241 anda snap ring 242 to secure the fan 2 on the rotation shaft 14 of themotor 1.

As shown in FIG. 6, the cooling fan assembly is mounted on a tableplaying machine 5 including a main frame 50 having two upper air holes52 and a lower air hole 51 connected to the two upper air holes 52. Thehousing 3 and the cover 4 are secured on the main frame 50 of the tableplaying machine 5, and the first air guide port 36 of the housing 3 andthe second air guide port 43 of the cover 4 are directed- toward thelower air hole 51 of the main frame 50.

In operation, referring to FIGS. 1-6, when the fan 2 is rotated by therotation shaft 14 of the motor 1, the ambient air from the netted plate42 of the cover 4 is introduced by the blades 22 of the fan 2 into thefirst air guide port 36 of the housing 3 and the second air guide port43 of the cover 4. Then, the air flows through the lower air hole 51 andthe two upper air holes 52 of the main frame 50 and is blown toward aball (not shown) placed above the main frame 50 so that the ball ismoved in an irregular manner, thereby enhancing the amusement effect ofthe table playing machine 5.

Accordingly, the first air guide port 36 of the housing 3 and the secondair guide port 43 of the cover 4 co-operate to increase the total airoutput of the cooling fan assembly, thereby greatly enhancing the airflow rate from the table playing machine 5. In addition, the first airguide port 36 of the housing 3 and the second air guide port 43 of thecover 4 increase the air flow rate of the cooling fan assembly, therebyenhancing the heat dissipation effect of the cooling fan assembly.Further, the motor 1 is covered by the housing 3 and the cover 4completely, thereby reducing vibration and noise produced by the motor 1so that the cooling fan assembly is operated at a state having smallervibration and noise.

Although the invention has been explained in relation to its preferredembodiment(s) as mentioned above, it is to be understood that many otherpossible modifications and variations can be made without departing fromthe scope of the present invention. It is, therefore, contemplated thatthe appended claim or claims will cover such modifications andvariations that fall within the true scope of the invention.

1. A cooling fan assembly, comprising: a housing; a motor mounted in thehousing; a fan rotatably mounted in the housing and rotated by themotor; and a cover mounted on the housing to cover the motor and the fanso that the housing and the cover form a space to cover the motor andthe fan completely.
 2. The cooling fan assembly in accordance with claim1, wherein: the housing includes a housing body for mounting the motorand an air guide base mounted on a side of the housing body and having aperipheral wall formed with a first air guide port to guide an air flowthrough the air guide base of the housing; the cover includes a recessedcover body mounted on the air guide base of the housing and having aperipheral wall formed with a second air guide port juxtaposed to thefirst air guide port of the air guide base to guide an air flow throughthe cover body of the cover.
 3. The cooling fan assembly in accordancewith claim 2, wherein the air guide base of the housing has a shape ofthe number six (6).
 4. The cooling fan assembly in accordance with claim1, wherein the cover body of the cover has a shape of the number six(6).
 5. The cooling fan assembly in accordance with claim 2, wherein thefirst air guide port of the air guide base is provided with a pluralityof first air gates to gather an air flow through the first air guideport of the air guide base; the second air guide port of the cover bodyis provided with a plurality of second air gates juxtaposed to the firstair gates of the first air guide port to gather the air flow through thesecond air guide port of the cover body.
 6. The cooling fan assembly inaccordance with claim 2, wherein the cover further includes a nettedplate mounted on an end face of the cover body to introduce an ambientair into the cover body.
 7. The cooling fan assembly in accordance withclaim 2, wherein the air guide base of the housing has an end portionformed with a plurality of through holes, the cover body of the coverhas an end portion formed with a plurality of screw bores, and thehousing further includes a plurality of locking bolts each extendedthrough a respective one of the through holes of the air guide base andscrewed into a respective one of the screw bores of the cover body tosecure the cover to the air guide base of the housing.
 8. The coolingfan assembly in accordance with claim 2, wherein the housing body of thehousing has a peripheral wall formed with a receiving chamber and twospaced passages located beside the receiving chamber; the motor includesa motorized body mounted in the housing body of the housing, a rotationshaft rotatably mounted on the motorized body, two electric wires eachmounted on the motorized body and extended through a respective one ofthe passages of the housing body, and a capacitor mounted on the twoelectric wires and received in the receiving chamber of the housing bodyby a locking screw.
 9. The cooling fan assembly in accordance with claim8, wherein the capacitor is secured in the receiving chamber of thehousing body by a locking screw.
 10. The cooling fan assembly inaccordance with claim 8, wherein the housing body of the housing has aninner wall formed with a plurality of screw bores, the motorized body ofthe motor has a periphery formed with a plurality of fixing ears eachformed with a through hole, and the motor further includes a pluralityof locking bolts each extended through the through hole of a respectiveone of the fixing ears of the motorized body and screwed into arespective one of the screw bores of the housing body to secure themotorized body of the motor to the housing body of the housing.
 11. Thecooling fan assembly in accordance with claim 8, wherein the fanincludes a circular recessed rotation body secured on the rotation shaftof the motor to rotate therewith, and a plurality of blades mounted on aperipheral wall of the rotation body and directed toward the first airguide port of the air guide base and the second air guide port of thecover body.
 12. The cooling fan assembly in accordance with claim 11,wherein the rotation body of the fan has an end face formed with aplurality of ribs arranged in a radiating manner and a fixing holelocated at a center of the ribs.
 13. The cooling fan assembly inaccordance with claim 12, wherein the rotation shaft of the motor isextended through and fixed in the fixing hole of the rotation body by awasher and a snap ring to secure the fan on the rotation shaft of themotor.